@misc{indiciae4ad10112027f,
  title = {Geologic map of the Sauvie Island quadrangle, Multnomah and Columbia Counties, Oregon, and Clark County, Washington},
  author = {Russell C. Evarts and Jim O’Connor and Charles M. Cannon},
  year = {2016},
  doi = {10.3133/sim3349},
  url = {https://pubs.usgs.gov/publication/sim3349},
  note = {Source identifier: sim3349}
}